Fastening device



I o. I. HOPPE FASTENING DEVICE Nov. 13, 1928. 1,691,064

Filed March 9, 1925 INVENTbR.

A TTORNEYS Patented Nov. 13, 1928.

UNITED STATES PATENT OFFICE.

OLGA I. HOPP E, OF KEW GARDENS, NEW YORK.

\ FASTENING DEVICE.

Application filed March 9, 1925. Serial No. 14,032.

My present invention relates to a fastening device particularly adapted for securing buckles or ornaments to shoes but is obviously useful for other and related purposes. My invention will be best understood by reference to the following detailed description and the annexed drawing in which Figure 1 shows my improved device attached to a ladys slipper, a I

- slipper which may be of any shape or design.

A buckle 8 is shown in place on the front of the shoe by a device designated generally as 9. Any form of buckle may be used and obviously any other useful or ornamental device may be fastened in place instead of a buckle. The buckle and the fastening device are shown on an enlarged scale for the purpose of better illustrating the relation of the parts. Referring to the fastening device, 10 denotes the base portion of the device which is fiat and smooth so as not to be uncomfortable to the wearer and is provided with a hollow stem 11.

Stem 11 is preferably cut obliquely so as to form a piercing point 12 and relatively sharp cutting edges diverging therefrom. Stem 11 is preferably threaded interiorly so as to receive the shank of the top portion. The latter consists of a head 15 having a shank 16,'the.

lower part of which is provided with screw threads to engage with the stem 11. Preferv ably shank 16 is also adapted for piercing having for such purpose, a point 17 and relatively sharp edges 18. In other words, shank 16 is of polygonic cross section, the relatively sharp corners only of which are threaded. This is an additional advantage in that the sharp, threaded corners easily become slightly dull whereupon they engage snugly the internal threads in the stem 11, and thereby insure against the top portion becoming looseand lost off. Y Y I The device shown in Figs. land 5 differs from that shown in Figs-2 and 3 only in that the sharp edges of the shank 16' of Figs. 4 and 5 are each-made'of triangularly shaped cross.

section, whereas the shank 16 itself of Figs.

2 and 3 is of triangular shape. Preferably shank 16 or 16 has a pointed end '17 which may be of service in effecting a puncture of the uppermost layer or layers which are to be secured. Preferably the side walls of the shank 11 are interrupted so as to provide a relatively narrow slot by means of which a pin or other implement mayv be inserted and the cut out pieces of the fabric removed which may become lodged therein. In use the cutting edges of the base portion may be inserted 1 through the fabric and rotated whereby a clean hole may be produced. 1

From the foregoing it will be evident that I have provided a simple yet effective form of fastening device which will not easily work loose andwhich may be used to bind together layers of relatively tough material by virtue of the cutting property of both the base and top portions.

I claim v 1. A fasteningdevice consisting of a base portion having a hollow stem sharply pointed and provided with an internal thread and a top part having a. threaded shank to engage said hollow stem and a headpositioned at the end of the said stem opposite the base when said parts are in fastening position.

2. A'fas'tenin'g device consisting of. a base portion having a hollow stem cut at an incline so as to form a piercing edge and provided with an internalthread and a top portion having'a threaded shank to engage said hola lowstem, saidshank also having a piercing point and piercingedges leading therefrom.

3. A fastening device consisting of a base portion having a hollow stem cut at an incline so as to form a piercing edge and provided with an internal thread and atop portion having a threaded shank to engage'said hollowstem, said shank being of polygonic cross section. I

4. A fasteningdevice consisting of a base portion having a hollow stem'cut at an incline so as to form a piercing edge and provided with an internal thread 0 ening in a direc tion toward the piercing e ge and-a top portion having a threaded shank to engage said hollow stem and a head adjacent the piercing edge of said stem when saidparts are in holding position. I

OLGA i. HAOQPPE.

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